Association of Body Mass Index with Physical Function and Health-Related Quality of Life in Adults with Arthritis
Table 1
Baseline demographics, arthritis medication usage, weight status, physical function, and health-related quality of life measures ()a.
% or mean (SD)b
Range
Demographic characteristics
Age, years
401
56.3 (10.7)
19–87
Gender
401
Men
57
14.2
Women
344
85.8
Race
400
White
256
64.0
African American
141
35.3
American Indian
2
0.5
Multiracial
1
0.3
Education
400
Less than a high school graduate
6
1.5
High school graduate or GED
46
11.5
Some colleges
105
26.3
College graduate
243
60.8
Employment status
399
Employed for wages
258
64.7
Self-employed
15
3.8
Out of work
14
3.5
A homemaker
7
1.8
A student
3
0.8
Retired
90
22.6
Unable to work
12
3.0
Arthritis medication usage
401
1 arthritis medication
341
85.0
Acetaminophen
139
34.7
NSAIDS
254
63.3
Steroids
32
8.0
Narcotics
67
16.7
DMARD
46
11.5
Weight status
BMI, kg/m2
401
33.1 (8.3)
15.8–60.7
Underweight (BMI < 18.5)
1
0.25
Normal weight (18.5 BMI < 25)
58
14.5
Overweight (25 BMI < 30)
114
28.4
Obese (BMI ≥ 30)
228
56.9
Physical activity
Hrs/wk of moderate to vigorous physical activity
401
3.4 (3.8)
0–25.5
Physical function measures
Six minute walk, m
399
494.1 (91.2)
151.5–721.6
Chair stands, no. stands
401
10.0 (3.5)
0–24.0
Seated reach, cm
399
21.7 (9.9)
−11.5–49.0
Walking velocity, m/s
397
1.1 (2.2)
0.4–1.7
Grip strength, kg
401
27.1 (10.2)
4.5–74.0
Health-related quality of life
Depressionc
401
6.5 (5.1)
0–28.0
Stiffnessd
400
5.3 (2.5)
0–10.0
Paind
401
4.7 (2.3)
0–10.0
Fatigued
401
5.0 (2.6)
0–10.0
Disabilitye
401
0.6 (0.5)
0–2.0
Quality of life, physicalf
400
6.9 (9.1)
0–30.0
0 days
107
26.75
1 day–14 days
222
55.5
>14 days
71
17.75
Quality of life, mentalf
399
5.2 (7.9)
0–30.0
0 days
148
37.09
1 day–14 days
196
49.13
>14 days
55
13.78
Some s are less than 401 due to participant refusal to complete measure. May not add to 100% due to rounding. Scores range from 0 to 30, with higher score indicating greater depressive symptom. Scores range from 0 to 10, with higher scores indicating more severe symptoms. Scores range from 0 to 3, with high scores indicating higher impairment. Scores range from 0 to 30, with higher score indicating more bad days.
